B23B 2231/0296
Ends of conical shanks
Official title: Ends of conical shanks, e.g. pull studs, tangs
B23B2231/0296 (Ends of conical shanks) appears on 22 US grants and 12 published applications in this corpus.
Search patents in B23B- Granted patents
- 22
- Published applications
- 12
- Assignees
- 11
- Inventors
- 32
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pull stud bolt installation and removal tool and tubular body manufacturing method thereof11 Aug 2026US 12,703,071 B2Protoeng Co., Ltd.
- Tool for installation and removal of retention knobs16 Dec 2025US 12,496,689 B2
- Method for installation and removal of retention knobs8 Aug 2023US 11,717,945 B2
- Tool for installation and removal of retention knobs11 Jan 2022US 11,219,987 B2
- Device for the quick change of tool holder adapters24 Aug 2021US 11,097,352 B2Algra S.P.A.
- Pull stud bolt installation and removal tool and tubular body manufacturing method thereof30 Jan 2025US 2025/0033174 A1Protoeng Co., Ltd.
- Tool for installation and removal of retention knobs12 May 2022US 2022/0143787 A1
- Method for installation and removal of retention knobs12 May 2022US 2022/0143788 A1
- Device for the quick change of tool holder adapters21 Jan 2021US 2021/0016372 A1Algra S.P.A.
- Tool for installation and removal of retention knobs10 Dec 2020US 2020/0384616 A1
Most cited
By later US patents
- Tool holder system and method of use43US 5,582,494 A1996
- Tool holder42US 5,593,258 ANikken Kosakusho Works Ltd. · 1997
- Tool holder system and method of use30US 4,971,491 A1990
- Spindle extension with self-contained pull-stud draw bar assembly28US 5,342,155 AHarroun Enterprises · 1994
- Toolholder25US 4,226,562 ASchmid-Kosta KG · 1980